Ash-conveyer



J. M. HOPWOOD.

ASH CONVEYER.

APPLICATION FILED OCT. 31, I917. RENEWED JAN. 29, I920.

Patented Aug. 31, 1920.

INVENTOR WITNESSES leg 3.

JOHN M. HOPWOOD, OF DORMONT, PENNSYLVANIA, ASSIGNOR TO THE .I-IAGAN CORPO- RATION, 0F PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

ASH-CONVEYER.

Application filed October 31, 1917, Serial No. 199,441.

To all whom it may concern:

Be it known that I, JonN M. Horwooo, residing at l)ormont, in the county of Allegheny and State of Pennsylvania, a citizen of the United States, have invented or discovered certain new and useful Improvements in Ash-Conveyors, of which improvement the following is a specification.

The invention described herein relates to certain improvements in conduits for ash conveyers and has for its object the provision for renewal of parts which are'subjected to the greatest wear or cutting away by the ashes and such an arrangement of the conduit as permits ofeasy access to the parts requiring'renewal, and for the .easy and accurate adjustment or location of the steam nozzle. The invention is hereinafter more fully described and claimed.

In the accompanying drawings forming a part of this specification, Figure 1 is a sectional elevation of an elbow of a conduitand parts adjacent thereto embodying my improvement, and Fig. 2 is a sectional view on a plane indicated by the line II-II,

Fig. 1.

In the practiceof the invention the elbow is formed in sections so as to permit of the easy renewal of worn parts and substitution of new parts. In the construction shown, the legs 2 and 3 are made integral with side walls 41- and the short intermediate wall 5.

The wall opposite the inlet leg 2 is formed by a plate or section? adapted to be bolted to flanges 8 on the side walls 4 as clearly shown. The elbow is supportedby a block or seat 9, adapted to form the closure of the opening in the elbows opposite the outlet lVhen the outlet leg 3 is connected to a vertical portion of the conduit, the block or seat is preferably provided with supporting legs 10 so as to permit ready access to the removable plate or section 7 and also to the steam nozzle 11 in the pipe 12 which extends through the block or seat. The arrangement of the steam nozzle in a removable portion, facilitates the adjustment of the nozzle in the axial line of the leg 3.

A wearing member 13 is arranged in the elbow opposite the inlet leg 2 so as to receive the impact of ashes entering through the inlet leg. This member is preferably constructed with a concave wearing face and the side walls 4 are so recessed that the edges Patented Aug. 31,1920.

14 of the member 13 will be outside of the direct lineof movement of the ashes and in planes approximately coincident with the inner surfaces of the sides of the leg.

As the ashes flow from the inlet leg, they will in part be, deflected andcaused to move toward and through the outlet leg by the jet of steam entering through the steam nozzle 11. A portion however will strike against the wearing member in line with the inlet leg of the elbow and be thrown back into the stream created by the steam et. It has been found that a considerable percentage of ashes will strike against the convex surface of the inner wall 5 and rapidly cut away such wall. Hence a section 15 of suchwall is made renewable as shown.

It has been found that although the cutting action of the ashes is greater in line with the inlet leg of the elbow, such cutting will extend upward toward and even to the end of the outlet leg of the elbow of the,

wearing block 13, and hence the wearing member 13 is extended upwardly to the end of the outlet leg as indicated at 16. As the lower portion of the wearing block 13 is subjected to the greatest injury, it is prc-' ferred to make the member in sections as shown, so that the lower part may be renewed without disturbing the upper portion. In order to permit of the. member 13 being made of considerable thickness without detrimentally reducing the transverse dimensions of the elbow, flanges 17 are formed around the periphery of the opening in the outer wall of the elbow, forming a recess for the reception of the wearing member, which is held in position by the plate 7. As

the cutting action is. small toward the end of the outlet leg 3, the recess in which the wearing member is arranged, is not extended. to the end of the leg, but the upper section of the wearing member is provided with a relatively thin portion 16 extending'to the end of the outlet leg.

As the wearing members or blocks 13 are wholly inclosed in the elbow and cannot be readily inspected, provision is made for giving a warning when said blockshould be renewed. A, desirable construction for the purpose consists in forming small passages 18 in the blocks, said passages being charged with fluid under pressure on the. escape of. which due to the cutting away ofthe block Renewed January 29, 1920. Serial No. 354,873.

.of fluid under pressure.

13, an alarm will be given. In the construction shown, these passages are closed at one end and have their opposite ends connected by pipes 19 to the cylinder 20 which is connected by a pipe 21 to a suitable source This cylinder is also connected to an indicator as a whistle 22 by a pipe 23. The port to which the pipe 23 is connected is normally closed by a disk 24 which is so supported by a spring 25 as to normally prevent the escape of fluid through the pipe 23. A passage 26 is formed through the disk so as to permit the maintenance of pressure in the passages 18 and also an equalization of pressure on opposite sides of the disk. This passage is made smaller than the pipe leading to the passages 18 so that in case of' the escape of air from the passages due to the cutting away of the block 13, the fluid pressure will be forced down far enough to permit fluid under pressure to flow through the pipe 21 and operate the whistle or other alarm.

As the walls of the conduit are rapidly cut away it becomes necessary at comparatively frequent intervals to renew sections of the conduit. affect the adjacent ends of two adjoining sections, but one to a greater degree than the other, and hence onlythe former need be renewed, prox'ision should be made to insure tight joints between the ends of the new and old sections. To this end the grooves in the faces of the flanges on the sections for the reception of the packing rings 27 are located distances from the inner circumferences of the sections, approximately equal to the thickness of the walls of the sections, so that the walls even at the joints may be cut almost wholly away without affecting the integrity of the oint between the sections.

It has been found that one side of the conduit will be cut away more rapidly than the opposite or adjacent surfaces, and that the durability of sections on portions of the.

conduit will be greatly increased by partially turning a section or sections on its axis. In order to render such adjustment commercially practicable, adjoining sections are drawn and, held together by means of bolts 28, passing through follower rings 29 which bear against the flanges on the sections of the conveyer, the follower rings being made in sections to permit of their being fitted around the sections. It will be observed that the bolts do not pass through the flanges, and hence by loosening the bolts at the end of the section which has been locally cut away, the latter can be turned As the cutting action may to bring an unworn portion into the position where the cutting action occurs.

I claim herein as my invention:

1. An elbow for an ash conveyer having in combination therewith a removable wearing block and means .for indicating the cutting away of the block.

2. An elbow for an ash conveyer having in combination therewith a removable wearing block having a passage therein, means for maintaining fluid pressure in said passage and an indicator operative by reduc tion of pressure in said passage.

3. An ash conveyer. having in combination therewith an elbow having an opening in the wall opposite the-outlet leg and a stool for supporting the elbow, the top of said stool being-adapted to close said opening.

4. An ash conveyer having in combination therewith an elbow having an opening in the wall opposite the outlet leg and a stool for supporting the elbow, the top of the stool being adapted to close said opening in the elbow and having an opening therethrough in line with the axis of the outlet leg for the reception of a nozzle.

5. An ash conveyer having in combination an elbow, pipe sections adapted to be connected to the ends of the elbow, flanges formed on the adjoining end of the sections and elbow, said flanges being provided with grooves located at a distance from the inner surfaces of the pipe sections and elbows sub stantially equal to the thickness of. the walls of said parts, follower rings adapted to engage said flanges and bolts for drawing said follower rings together, said bolts passing through the follower rings at points outside of the flanges ofthe sections in 01'- der that one of the connecting members may be turned without removing the bolts.

6; An ash conveyer having in-combination a plurality of sections provided "with flanges semicircular grooves formed in the faces of the flanges at a distance from the inner surfaces of the sections substantially equal to the thickness of the walls of said sections, a packingring arranged in said grooves, follower rings adapted to engage said flanges and bolts passing through the follower rings outside of the flanges, in order that one of the connected sections may be turned on its axis without removing the bolts. I

In testimony whereof I have hereunto set my hand.

JOHN M. HOPWOOD.

ill 

